Volume 115, Number 4, August 2016
|Number of page(s)||7|
|Section||Atomic, Molecular and Optical Physics|
|Published online||23 September 2016|
Resonances in the rotational constants of Cs2 levels analysed by an improved-Bv-formula associated to a 2-channel model
1 Laboratoire de Recherche Energie et Matière pour les Développements des Sciences Nucléaires (LR16CNSTN02) & Direction de la Recherche sur l'Energie et la Matière, National Centre for Nuclear Science and Technology Sidi Thabet Technopark 2020, Ariana, Tunisia
2 Laboratoire Aimé Cotton, CNRS, Université Paris-Sud, ENS-Cachan, Université Paris-Saclay 91405, Orsay, France
Received: 27 May 2016
Accepted: 27 August 2016
Spin-orbit coupling in long-range molecular levels of Cs2 assigned to resonances in the rotational constant spectrum (Lignier L. et al., Phys. Chem. Chem. Phys., 13 (2011) 18910; Pichler M. et al., J. Chem. Phys., 121 (2004) 1796) has been analyzed with a model which associates an improved-Bv-formula (established here) and a 2-channel model. The approach explains the Lorentzian shape of the observed resonances superimposing a non-horizontal background and the fit of the Bv-spectrum allows us to deduce the spin-orbit coupling parameters. We compare this approach with an analysis of the binding energies using the vibrational quantum defect (VQD). The good agreement between the methods lets one conclude that the improved-Bv-formula associated with a 2-channel model provides a pertinent approach for analyzing coupled molecular series.
PACS: 33.20.Tp – Vibrational analysis / 33.20.Sn – Rotational analysis
© EPLA, 2016
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.